DNA Exam

Use the drawing below to answer the following questions. Which letter indicates a sugar molecule?

• E
• A
• B

Use the drawing below to answer the following questions. Which letter indicates a nucleotide?

• E
• D
• J

Use the drawing below to answer the following questions. Which letter indicates a phosphate molecule?

• H
• I
• D

Use the drawing below to answer the following questions. Which letter indicates a hydrogen bond?

• C
• A
• F

Use the drawing below to answer the following questions. Which nitrogen base is seen at letter B?

• Thymine
• Adenine
• Guanine

Use the drawing below to answer the following questions. Is the structure seen at letter F a purine or a pyrimidine?

• Purine
• Pyrimidine

Use the drawing below to answer the following questions. Which nitrogen base is seen at letter H?

• Cytosine
• Adenine
• Thymine

Use the drawing below to answer the following questions. Which nitrogen base is seen at letter I?

• Cytosine
• Guanine
• Adenine

Use the drawing below to answer the following questions. Which nitrogen base is seen at letter F?

• Adenine
• Guanine
• Thymine

A purine is always bonded to a pyrimidine in the center of the DNA helix.

• True
• False